| 释义 |
subsurface aerator
- ultraconservativeadj. 极端保守主义的
- 表面下的biǎo miàn xià de
subsurface
- 通风装置tōng fēng zhuāng zhì
aerator
- 曝气机pù qì jī
aeration machine; aerator
- 抛丸清理机pāo wán qīng lǐ jī
aerator; shot blasting machine
- 井下安全阀jǐng xià ān quán fá
subsurface safety valve; DHSV(downhole safety valve)
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